CN1040168A - Film material having total reflection function - Google Patents

Abstract

A kind of thin-film material, suitable to for example printing material or packaging material, this thin-film material is made up of the thermoplastic polymer of colourless or colored transparent, a surface modes of this film is moulded uneven shape, thereby makes the light that incides this film reverse side from flat surfaces present total reflection or intimate total reflection phenomenon.

Description

Film material having total reflection function

The present invention relates to a kind of thin-film material with total reflection or intimate total reflection effect, this thin-film material is suitable as printing material or the packaging material that for example adopt thermoplastic polymer film to produce.

Printing material generally adopts paper, plastics, aluminium foil and laminated product thereof or thin aluminium sheet, iron plate, glass plate, fiberboard etc.Even but its surface of these materials also can only produce the printing effect on plane at grade through processing, so the requirement to a kind of like this printed substrates material has just placed on the agenda, can draw and the different printing effect of the sort of planographic effect with this printed substrates material.

On the other hand, packaging material generally are to be made by the material such as paper, plastics, aluminium foil and laminated product thereof and thin aluminium sheet, iron plate and glass plate and various those packaging material of extensively selling on the market.But these packaging material have advantage that shortcoming is also arranged, each have their own panoramic problem.For example, the container that glass is made is desirable from health with the viewpoint of content and isolate from outer air, but its weight is big, and is easily broken, thereby its purposes is limited, and removes and be used as the specific use, generally be do not wish mass-produced.On the other hand, the metal can of aluminium matter and irony etc., the ability of its stored contents thing and all be excellent, and light weight with the ability of content and isolate from outer air, but reclaiming and the influence of the lower-molecular-weight component content that it is comprised in to coating on inner surface is a problem.When being meant to change content, it is inconvenient doing broken these hard containers, but lid might be unloaded or with sharp keen instrument metal can is done broken, and the precautionary measures of these action have been become the task of top priority, underway at present.

By contrast; resemble the base material of paper, plastics and aluminium foil and so on; in light weight; and available various molded method manufacturing; it is excellent materials for the usefulness of packing; but they are also underway at present to the precautionary measures of these action to not having protective effect for making the content sex change will pack the action that is destroyed consciously.

Therefore, the objective of the invention is to eliminate the above-mentioned shortcoming of prior art and a kind of thin-film material that total reflection or intimate total reflection effect are suitable for use as printing material for example or packaging material that has is provided.

Another object of the present invention provides the printing material of a kind of can addressing the above problem (promptly only producing the problem of planographic effect), provides prior art unprecedented a kind of novel printing effect.

Another object of the present invention provides and a kind ofly can protection packing makes it avoid having and expect the destruction that makes its content sex change and packing is carried out.

From following explanation, can understand other purpose of the present invention and advantage.

The invention provides a kind of like this thin-film material, this thin-film material comprises a kind of colourless or coloured transparent thermoplastic thin polymer film, a surface modes of film is moulded irregularly shaped, is reflected fully so that incide that light on the film reverse side is reflected fully or be close to from a flat surfaces.

The present invention also provides a kind of like this printing material, this printing material comprises a kind of colourless or coloured transparent thermoplastic thin polymer film (for example 30 to 200 micron thickness), a surface modes of film is moulded irregularly shaped, be reflected fully so that incide that light on the film reverse side is reflected fully or be close to from a flat surfaces, printing then is to carry out on the non-molded surface of this film.

The present invention also provides a kind of packaging material, these packaging material comprise the film of two-layer colourless or colored transparent thermoplastic polymer, this film is thick to be (for example) 30 to 200 microns, a surface of each film all is molded as uneven shape on one or more directions, the shape of zigzag or sawtooth like for example, thereby the light that incides the film reverse side from flat surfaces is reflected fully, this film is one and is laminated to above another, thus make two films separately the irregular groove of shape form a certain required angle each other.

The present invention also provides a kind of like this packaging material, these packaging material comprise the film of two colourless or colored transparent thermoplastic polymers, a surface of each film all is molded as the out-of-flatness shape on one or more directions, thereby the light that incides on the film reverse side from flat surfaces is reflected fully, the peripheral part of film is sealing under the decompression situation and under the state that can present Moire fringe, described material demonstrates total reflection phenomenon, and Moire fringe disappears when breaking away from decompression state.

Used " packaging material " speech is meant and self can makes packing container or make the material that outer containter is used among the present invention.

Read following detailed description referring to accompanying drawing and can understand content of the present invention better.In the accompanying drawing:

Fig. 1 is the cutaway view of the existing thin-film material total reflection effect of explanation;

Fig. 2 is the cutaway view of the synthetic laminated film of two film stack, and this two film is superimposed that each groove (for example zigzag groove) of its out-of-flatness shape is met at right angle.

Fig. 3 is the cutaway view that adopts the container that thin-film material shown in Figure 2 is prepared into;

Fig. 4 is the cutaway view of a bottle with cover, and wherein sealing film has adopted base material shown in Figure 1.

Employed film is moulded the uneven shape that shows total reflection or intimate total reflection performance by means of the engraved roll heated mould of for example indention or analogous shape and obtains among the present invention. With regard to the shape on roller surface, can adopt the mode cross section to be the roller of uneven groove (for example sawtooth of parallel engraving), have identical or analogous shape by desired angle (for example right angle or 30 is to an angle of 90 degrees) roller of parallel engraving from the teeth outwards. In addition, even require to form incomplete total reflection phenomenon, also can adopt to have the meticulous uneven shape film that is engraved as any required form. Thus obtained film can will incide on its smooth surface or near the light it is reflected fully, thereby can provide and have press polished surface.

The example that can be used for transparent thermoplastic polymer of the present invention comprises polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, polyurethane, ethylene-vinyl alcohol copolymer and nylon.

Will be used for thermoplastic polymer film of the present invention, its thickness is preferably for example 30 to 200 microns, and more preferably situation is 120 to 200 microns, but in the situation of the heat shrinkable film of being produced by drawing, thickness is preferably 30 to 60 microns. By the thermoplastic film of molding of the present invention, its thickness can adopt above-mentioned thickness. But when the molded shape indention, can shrink during to 200 ℃ at stretch 2 to 3 times film heating to 150 of sawtooth direction, and demonstrate total reflection phenomenon, therefore can provide above-mentioned thermoplastic film with new printing effect, rather than common used the sort of heat shrinkable film.

When printing according to a first aspect of the invention, the image that prints looks like in the middle of reverberation in the lip-deep space orientation of plastic sheeting that has gloss and present total reflection or intimate total reflection. In addition, when the out-of-flatness superficial layer of molding was stacked on paper or the plastic sheeting surface, its tone was lower than total reflection light the film that produces, thereby can obtain to present peculiar relief printing material. For example, just obtain to be similar to the reverberation of iron when pellicular cascade of the present invention is on black paper or the plastic sheeting, in the situation of grey, then obtain being similar to the reverberation of aluminium. During as packaging material, by selecting the tone corresponding to content, can provide the image of content with system of the present invention.

When printing is to carry out and film system when being layered on the ready-made container at the smooth surface that thermoplastic film of the present invention is provided with difficult some pin holes of observing out, change the shape that pressure in the container namely might change container. For example, fill with into and enclose when cooling off then in the container being heated to about 90 ℃ aqueous solution such as coffee or imperial tea, volume can reduce 10 to 15%, is in the situation of plastic containers at container therefore, paper can fall in, so lost commercial value. But when when pellicular cascade of the present invention is to these containers, even then owing to the pressure decreased in the container deforms, extraneous air also can flow into gap between film and the container by all pin holes, thereby make film of the present invention keep its normal shape, even and do not print, but owing to have total reflection phenomenon, thereby also can not observe the distortion of internal tank. The diameter of described pin hole preferably is equal to or less than 1 millimeter, and its number is 2 to 3 concerning the container that a volume is 250ml.

According to a second aspect of the invention, packaging material are made of two said film materials.

Remaining each other in addition, stacked its out-of-flatness shape of two films can be same to each other or different to each other.

In a most preferred embodiment of the present invention, the film of the groove of two for example zigzag cross sections that parallel formation only arranged in one direction is mutually stacked, so that their groove is each other in any required angle (for example 30 °～90 °).

As for the method for laminate film, can adopt the method that then its peripheral part sealed of two film close contacts (for example in the situation of decompression), or the method for two film portion being pasted with binding agent. Sticking film can suitably adopt traditional heat viscosity method or heat fusing Method for bonding. The method that can adopt prior art usually to adopt when preparing packing container with the laminated film through pasting, such as cutting, pre-molding and heat-sealing etc.

Liquid poured into the packing container made by material of the present invention and when for example entry needle is opened a hole from the outside, liquid in the container will be in the hole that the superimposed part infiltration of the out-of-flatness of the wall of packing container is opened, so the total reflection phenomenon of container can disappear, namely can tarnish, transparency can strengthen simultaneously. Like this, just can immediately clearly find this behavior. Respectively have the surface that forms the out-of-flatness shape resemble sawtooth and so on and be coated with the laminated film that the film of molysite (for example ferric trichloride) and tannic acid or derivatives thereof is produced a method that is layered on another with stacked two, the container used of preparation carrying liquid is poured water in it then. With (for example) entry needle from the outside when a hole left by container, water can infiltrate the gap between the film, so the total reflection phenomenon of container can disappear, gloss can disappear, simultaneously transparency strengthens, and the color blackening, and this action just can be perceiveed out at once.

With the heat fusing method laminated film that pastes is sticked on the bottleneck, and the transparency cover that will have hot-melt adhesive be bonded to inboard mid point or any desired bonding local time, lid just shows total reflection phenomenon, produce high glaze, but when lid is opened, the film that pastes just progressively cuts along its periphery, and sends out wrinkle by extending, till it is entirely by strip off.Film is during by strip off, and the gloss that produces because of total reflection can disappear, and transparency increases, and might look at whether lid is opened from top observation inside thereby become.

In addition, be pressed into the occasion of the decorative pattern (for example zigzag) of out-of-flatness shape at film, as the present invention does, then be laminated to each other to such an extent that make and contact with each other through the surface of molding or when making the superficial layer of molding be stacked in flat surfaces without molding when two films systems, if the direction of embossing processing is all identical or approximate each other, then can form tangible Moire fringe.Place decompression to seal its periphery with hot melt then down with demonstrating the stacked good film of Moire fringe, the laminated film that so is prepared into can present total reflection phenomenon, and with pin or sharp utensil the film cutter is worn when removing decompression state, if with each film separately, then Moire fringe just can disappear.Therefore just might prevent this action as stated above.

Plan is used for its thickness of thermoplastic polymer film of the present invention and preferably gets 30 to 200 microns as mentioned above, and better situation is to get 120 to 200 microns.

In addition, packing of the present invention is just known from its structure, is to have thermal insulation properties highly, thereby can be used as the container of splendid attire through cooling or heatable substance.In addition, different with metal can or vial, this container light weight, and its handling problem can solve by burning, thus provide prior art unprecedented premium properties.

In above-mentioned various researchs, two plastic sheetings that constitute laminated product can be of the same race, also can be not of the same race, and adopt when utilizing the laminated film of its characteristic, can obtain significant effect.For example, when packing container of the present invention, its nexine adopts polyethylene terephthalate film, outer when adopting polyvinylidene chloride film, and outer film looks the gloss height, and inner surface is then as safe as a house to drink and food, and they can be not spoiled.In addition, when packing is when being filled with the beverage of carbonic acid gas, carbon dioxide is by entering the gap between each film through internal membrane, but outside polyvinylidene chloride film has excellent barrier properties to gas, therefore pressure becomes and is close to the interior pressure that equals to form balance, thereby might make the beverage that is filled with carbonic acid gas keep the normal pressure of 3 to 4 kg/cm, last about 6 months.In addition, when the wall of wanting to pack by this class injected foreign substance, the liquid in the container can infiltrate formed hole, so gloss disappears, its transparency changes simultaneously, so this action can be found out immediately and clearly.

Further content of the present invention is described again now, but these examples never mean it is limitation of the present invention by following example.

Example 1

As shown in Figure 1, a surface (2) of thick about 200 microns polypropylene film (1) is molded as in one direction the out-of-flatness shape of sawtooth like, thereby make it obtain total reflection, on smooth non-molded surface, print printed image (5) then.The product that so obtains has graceful charming printing effect, and wherein printing the image that comes out is to observe in the reverberation that forms by total reflection phenomenon.

Example 2

When the film that Fig. 1 is obtained is laminated to black thin film (6) as shown in Figure 2 and goes up, just obtain graceful charming printed matter, wherein print the image that comes out and be in the reverberation of the metallic luster of band class chalybeate and observe.

Liquid container shown in Figure 3 is with film preparation shown in Figure 2, wherein is filled with orange juice.When piercing through this container with entry needle, orange juice just permeates the gap between two films, thereby total reflection phenomenon is disappeared, so the color blackening so just can be found this action clearly.

Example 3

Substitute as city's pin paper container, one has example 1 and can produce grace and charming printing effect at the container that is laminated on the white body paper surface of a paper container before the printing and be printed on the film of print pattern, and wherein the image that comes out of printing can be seen in the light of milky total reflection.When the paper container filling of this example was pierced through this container with orange juice and with entry needle, orange juice just permeated the gap between paper and the plastic sheeting, then the total reflection phenomenon disappearance, thus clearly illustrate that the incident that the puncture container once took place.

Example 4

With the out-of-flatness shape of polypropylene film molding imaging zigzag of 100 micron thickness and so on, thereby make it can produce total reflection, then along the twice that stretches on the sawtooth mono-axial direction.On the smooth surface of thus obtained thick about 50 microns film, print, with this printing film twine volume be 100 milliliters polystyrene system container and be heated 150 to 170 ℃ when lasting for 2 seconds it being shunk, can obtain graceful charming container, wherein printing the image that comes out is to see in the opalesce of total reflection.

Example 5

The volume that polyethylene terephthalate is made be 250 milliliters container (cylindrical shape, thick about 100 microns) irritate with caffeinated water's solution and be heated to about 80 ℃ with its sealing.This container is wrapped with the polypropylene film that the present invention is provided with the about 1 millimeter pin hole of 2 diameters.Originally, this container is cylindrical, but when it is shelved cool to room temperature, just forms a recess on the cylinder side wall.Air flows in the gap by the pin hole of film of the present invention then, so film just recovers its original cylindrical shape, thereby does not almost see the distortion that container produces, and has kept its commercial value.

Example 6

As shown in Figure 1, a surface (2) of thick about 200 microns polypropylene film (1) is molded as the irregularly shaped of sawtooth like in one direction, the surface that two films (5) and (6) molding like this is come out contacts with each other, as shown in Figure 2, and it is stacked, so that their direction meets at right angle, the tubular package thing of using with the material preparation carrying liquid that draws thus again, as shown in Figure 3.

As can be seen from Figure 3, this packing material is made up of three parts, lid (8), side (9) and bottom (10), and lid (8) has hole (11).Lid (7) adheres on the hole (11) with hot-melt adhesive (13), and the main body of lid (7) comprises same laminated film.Strip off lid (7) is the liquid in the pourable container.

Because total reflection phenomenon, the surface of container seems opaque, the gloss height, but if with entry needle when film is pierced through in the outside, then liquid permeates between two films, so total reflection phenomenon disappears, and the transparency of this part improves, thereby can know and find that easily this puncture takes action.

Example 7

As shown in Figure 4, with hot-melt adhesive (18) polypropylene composite film (16) is adhered on the bottleneck, prepare bottle (17) with being located at the inner hot-melt adhesive of lid (14) again, bottle (17) has laminated film (16) and covers the structure that (14) are pasted together, above-mentioned laminated film (16) is identical with the film with structure shown in Figure 2, just the component part of example 2 is comparatively desirable, and it has a thickness to be for example 100 microns upper film, and is easy to extend.In this case, the smooth part of film is about 30 microns, and can elongation under the effect of slight stress.

When the lid (14) of outwarding winding was opened bottle (17) shown in the figure (4), the core on laminated film (16) top significantly extended, and is wrinkled, and clearly shows the someone thus and attempts lid (14) is opened.In addition, in the time of will covering (14) and remove and remove the film of top band wrinkle, the lower film surface just presents state shown in Figure 2, can see that transparency has increased, and total reflection phenomenon has disappeared, and is once once laid down thereby clearly show lid.

Example 8

Adopt ethylene-vinyl alcohol copolymer (EVAL is made by Kuraray company) to prepare its structure and can make the laminated film that incides its surperficial light total reflection as shown in Figure 2 as thermoplastic polymer.

Resemble the irregularly shaped of sawtooth and so on and make it total reflection (Fig. 1) to another film, make erose groove intersect 90 degree pellicular cascade again thereby a surface modes of thick about 200 microns EVAL film is moulded, as shown in Figure 2.The base material preparation liquid base material as shown in Figure 3 that employing obtains by heating and fusion laminated film peripheral part.

Because total reflection phenomenon, the outward appearance of vessel surface is opaque, the gloss height, but if with entry needle film is pierced through, then liquid permeates the gap between two films, so total reflection phenomenon disappears, the transparency of this part increases, thereby can clearly find a kind of like this action.

EVAL shows the performance of excellent obstruct gas in low-humidity environment, but this effect increasing and descend with humidity.But under the situation of two laminated films, air can coexist as therebetween, and we find to intercept this moment the influence that gas performance is not subjected to external environment.That is to say that the container that obtains by this example has the effect of gas barrier property and " preventing fraud ".

Example 9

In example 6, for presenting total reflection phenomenon on the erose surface (2) that resembles sawtooth and so in formation, after coating ferric chloride aqueous solutions and tannic acid sodium water solution on this surface, carry out drying, then a pellicular cascade to another film, thereby make groove in irregular shape intersect an angle of 90 degrees, prepare the cylindrical vessel that carrying liquid is used with this.

Because total reflection phenomenon, the outward appearance of container is opaque, the gloss height, but if when piercing through film with entry needle, water permeates the gap between two films, thereby total reflection phenomenon is disappeared, so transparency increases, and because tannic acid and iron react the color blackening.Therefore can clearly find this action.

Example 10

With the surface (2) of thick about 100 microns ethylene-vinyl alcohol film molding imaging sawtooth and so on irregularly shaped in one direction, obtain total reflection phenomenon (Fig. 1) thus, then with a pellicular cascade to another above, all grooves in irregular shape are intersected each other meet at right angles.

During with above-mentioned two pellicular cascades, fill mixture (mixing ratio 1: 1) in the gap between whole lip-deep each film with ethanol and water, under the decompression situation that vavuum pump causes, peripheral part is sealed again, to form the laminated product of a transparent membrane by heating.When with entry needle film laminate being stung out a pin hole, the liquid in the gap can disengage, and the air penetration gap, so total reflection phenomenon disappears, makes film surface be transparent pearl.Like this, just can clearly find the sort of action.

The film laminate proper packing of this example resembles the dried foods of chocolate and candy and so on.

Example 11

With a surface of thick about 100 microns ethylene-vinyl alcohol film molding imaging sawtooth and so on irregularly shaped in one direction, to obtain total reflection phenomenon (Fig. 1), again that two moldings is the good mutual lamination of film is superimposed, so that each groove direction in irregular shape is identical or approximate each other.

As this layered manner, each surface through molding can be contacted each other, or make through the surface of molding and contact with flat surfaces (without the surface of molding).In this example, two kinds of methods have all adopted, and two kinds of methods all draw the similar Moire fringe of effect.The width of Moire fringe is different with the difference of molding direction, and along with the difference of direction, and this width becomes greatly from 1 millimeter to 5 millimeter.Under situation of the present invention, the gloss of Moire fringe is stronger than peripheral part, to form graceful charming figure.

Under the decompression situation, settle film laminate and during the seal perimeter part, just can obtain stably to maintain on it film laminate of Moire fringe by heating and melting with the Moire fringe when stacking as described above.

This film laminate is graceful and charming film laminate, be formed with glossiness Moire fringe on its pearlescent surface, present total reflection phenomenon, thereby and when opening aperture with entry needle or blade and destroy decompression state, two films are just separated from one another, and Moire fringe disappears, and only presents general total reflection phenomenon, so can clearly find this behavior.

Claims (11)

1, a kind of thin-film material, it is characterized in that, this thin-film material comprises the thermoplastic polymer film of colourless or colored transparent, and a surface modes of this film is moulded irregularly shaped, thereby makes the light that incides this film reverse side from a flat surfaces present total reflection or intimate total reflection phenomenon.

2, a kind of printing material that is made of the thin-film material of claim 1 is characterized in that, printing is to carry out on without the surface of molding at this film.

3, printing material as claimed in claim 2 is characterized in that, a described colourless or coloured paper or the thin polymer film that be laminated with on the surface of molding accompanies a thin air layer simultaneously therebetween.

4, printing material as claimed in claim 2 is characterized in that, this printing material is stretched on a specific direction, makes it have the performance of heat shrinkable film.

5, printing material as claimed in claim 2 is characterized in that, printing is to carry out on the smooth surface of the aperture that is provided with any required size, and can not observe container when packing container covered and change the distortion that produces because of its internal pressure.

6, a kind of packaging material that comprise two described films of claim 1, these two films are stacked mutually, so that groove in irregular shape forms a required angle each other on the two corresponding films.

7, packaging material as claimed in claim 6 is characterized in that, the overlapped way of described film is that it is contacted with flat surfaces without molding through the surface of molding.

8, packaging material as claimed in claim 6 is characterized in that, when being impregnated with liquid between two films or during with the film strip off on incident light one side, total reflection phenomenon disappears, and transparency strengthens.

9, packaging material as claimed in claim 6, it is characterized in that described two films comprise and be coated in described erose lip-deep molysite and tannic acid or derivatives thereof, and when water or the aqueous solution infiltrate between the film, the color blackening of material, total reflection phenomenon disappears simultaneously.

10, packaging material as claimed in claim 6, it is characterized in that, between two films, be filled with any required liquid of very thin one deck, and its peripheral part is sealed by heating under the decompression situation, to form pellucidity, when removing this decompression state, this pellucidity presents total reflection phenomenon.

11, a kind of packaging material, it is characterized in that, this material comprises two by film colourless or that the pigmented thermoplastic polymer is made, a surface of each film ties up to and is molded as uneven shape on one or more directions, thereby the light that incides this film reverse side from flat surfaces is reflected fully, this film is sealed by its peripheral part of heating under the decompression situation, and be in the state that can manifest Moire fringe, when removing this decompression state, described material list reveals total reflection phenomenon, and Moire fringe disappears simultaneously.